| Text | Length |
| Flu sufferer's woe | 22 |
| Flu symptom | 11 |
| Flu symptom, perhaps | 20 |
| Flu symptom, with "the" | 33 |
| Flu symptoms | 12 |
| Flu treatment, at times | 23 |
| Flu type | 8 |
| Flu vaccine opponent Bill | 25 |
| Flu vaccines, e.g. | 18 |
| Flu variety | 11 |
| Flu victim | 10 |
| Flu ward sound | 14 |
| Flu ___ (autumn offerings) | 26 |
| Flu, e.g. | 9 |
| Flu, old-style | 14 |
| Flu-fighting org. | 17 |
| Flu-like condition | 18 |
| Flu-like symptom | 16 |
| Flu-like symptoms | 17 |
| Flu-ridden | 10 |
| Flu-season necessity | 20 |
| Flu-stricken | 12 |
| Flub | 4 |
| Flub a catch, e.g. | 18 |
| Flub a grounder | 15 |
| Flub a paint job | 16 |
| Flub at Fenway | 14 |
| Flub by a fielder | 17 |
| Flub catcher | 12 |
| Flub it | 7 |
| Flub something | 14 |
| Flub the game | 13 |
| Flub the shot, say | 18 |
| Flub up | 7 |
| Flub, as a grounder | 19 |
| Flubbed | 7 |
| Flubbed a drive | 15 |
| Flubbed a fly | 13 |
| Flubbed flies | 13 |
| Flubbed golf stroke | 19 |
| Flubbed it | 10 |
| Flubbed one | 11 |
| Flubbed one's lines | 23 |
| Flubbed the game | 16 |
| Flubbing it | 11 |
| Flubs | 5 |
| Flubs a fly ball | 16 |
| Flubs a golf shot | 17 |
| Flubs a shot | 12 |
| Flubs it | 8 |
| Flubs one | 9 |
| Flubs the shot, e.g. | 20 |
| Flubs up | 8 |
| Fluctuate | 9 |
| Fluctuate in intensity | 22 |
| Fluctuate repeatedly | 20 |
| Fluctuate wildly | 16 |
| Fluctuated | 10 |
| Fluctuates | 10 |
| Fluctuates wildly | 17 |
| Fluctuating | 11 |
| Fluctuating figures at Belmont | 30 |
| Fluctuating fortunes | 20 |
| Fluctuating marketplace | 23 |
| Fluctuation | 11 |
| Fluctuation of musical tempo | 28 |
| Fluctuation of tempo | 20 |
| Fluctuations | 12 |
| Fludd hit, "Cousin _____" | 36 |
| Flue | 4 |
| Flue accumulation | 17 |
| Flue befouler | 13 |
| Flue blackener | 14 |
| Flue buildup | 12 |
| Flue coat | 9 |
| Flue coating | 12 |
| Flue collection | 15 |
| Flue deposit | 12 |
| Flue dirt | 9 |
| Flue filth | 10 |
| Flue find | 9 |
| Flue fleck | 10 |
| Flue flecks | 11 |
| Flue grime | 10 |
| Flue problem | 12 |
| Flue protector | 14 |
| Flue residue | 12 |
| Flue stuff | 10 |
| Flue substance | 14 |
| Flue symptom | 12 |
| Flue-stricken? | 14 |
| Flue; chimney | 13 |
| Fluency | 7 |
| Fluency subj. | 13 |
| Fluent | 6 |
| Fluent and relaxed with speech | 30 |
| Fluent in a common tongue | 25 |
| Fluent in a Germanic tongue | 27 |
| Fluent quality | 14 |
| Fluent speakers avoid them | 26 |
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